Cross-dyeing cellulose fabric



. silk which will take 50' it is'obvious that Patented May 24', 19 21.

UNITED STATES PAT NT omcs.

JOHN c. wa'rson,

. a mural. r. earns,

,Io Drawing.

My invention relates to an improved proces of manufacturing an all cellulose textile fabric in contrasting colors. I employ the words cellulose textile fabric to include an- 6 all cotton'fabric, or afabric made from the type of rayons which contain'substantially .the same percentage of cellulose as cotton or a greater percentage of cellulose and which have substantially the 10 same types of dyestuffs as cotton namely, viscose rayon, cupra-ammonium rayon and chardonet rayon, etc. "entirely or mixed with cotton. An application Serial No. 123,801-

is filed of even date herewith July 20, 1926,

15 which is a continuation in-part of application #73,471, filed Dec. 5, 1925, which discloses broadly the same. invention as .this application. This application is a continuation in part of application #94:,089, filed 2 Mar. .11, 1926, covering specificallya second s ecies-of the broad invention disclosed in erial 123,801 application filed July '20, 1926. nother application covering a third species of the invention, Serial #123,803

9 25 is filed of even date herewith July 20, 1926.

Hitherto where it has been desired to produce a fabric having a two color effect, either the warp or the filling have been woven of two different materials such as cotton and the dye in different shades or amounts, or the warp or filling yarns have had to be separately dyed wit two difierent colored dyes prior to weaving.

. The main feature of my process is to treat the warp, during the slashin 7 process. with the'first step of a two step yeing process,

the nature of the ingredient thereo added tothe size beingsuch that it will have no its functionin appreciable effect u n 40 weavingthe cloth in t e usual manner wit "a filling and later treating thev fabric with the secondstep of. a two step dyeing process, which acts upon the prepared warp to form the dye thereon. I am aware that .5 hitherto it has been suggested to add a direct or. substantive d e taneouslysize an dye the fabric with a one step dyeing process. As the actual water soluble dye-has to be inserted with the size v p in a short space of time, the size bath will become messy and-th'e'dyeing irre lar and 'in addition a fast coloris not" pro uced.

""Various types of two step dyeing- 56 are known and it is'immaterlal for the pur- 01' ATTLEBOBO, II IASSAGH USETTS,

01 PROVIDENCE, RHODE ISLAND.

same aflinity for the warp.

. pen ently to the size to s'imulin a suitable fashion it with a size so wear the assronoa or en's-HAL! 'ro cnoss-nYEnr nmnosri ranarc. Application meuul so, was; Serial no. 128,809.

po'ses step dyeing process be employedso long as one is chosen wherein the first step has no component and the second step consists of treatin and treatm it with an additional dye component Where the first/ step conslsts of the warp with a dyestufif in a true or mo ified form and the-second step' consists of treating it with a chemical hav ng an oxidizing or a reducing matter of species B is s v this application, 'na e y, where "a dye or.

dye component is in with the size'an d a second dye component applied to the entire fabric to combine only with the treated I am aware that cotton goods of contrasting colors have been made by treating the war or the filling threads entirelyindeof the slashing tannin mordant before weavlng the cloth in the usual manner with an unprepared filling and then dyeing the fabric with a basic color which acts upon the mordanted warp alone and later dyeing the fabric with a direct color which acts on the unmordanted filling.

This process is impractical and expensive for it requiresthe extra cost of an entirely distinct and separate step such as treating with naphthol independently of any sizing and prior to weaving. Thus the added cost of this added step makes'thismethod of dyeing impractical. The warp is first beamed .for usein a loom and then passed through a slasher box to cover threads will stand up during the frictionand receive in The fabncfis then woven in the usual manner.- Thus in the usual gray cloth -ma'nufacturing plants at present thereisno suitable dyeing or mordanting apparatus for performing of invention what type of a two I two step. dyeing processes however,

action. The sugect recess; with a that the individual warp the weaving process. 1

this separate step. Employing it is obvious that it will ties, but with a real dye in e ient or a on the my process however, which merely consists which acts on the unprepared set to dye it a inputting a small amount of the ingredient of the first step of a two step dyeing process right'into the slasher, a piece of standard equipment. In every cotton mill, it is obvious that my process can be employed without the necessity of purchasing extra dyeing or mordanting equipment or without turning the cotton mill into a dye house. After weaving the fabricinthe grey form it may then be sent to the dye house where the rest of my process may be completed to dye the fabric in contrasting colors with the usual dyeing equipment by any or the wellown processes.

These and such other objects of my invention as mayhereinafter appear will be best understood from a description of various embodiments of my process. 7

My invention includes simultaneously treating the war threads in the slashing process with a suitable size for weaving and with a first ingredient of a two step dyeing processyeach of which has no a preciable efi'ect on the functioning of the other, weaving the cloth in the usual manner with a filling and then treating the entire fabric with the second step of a two step dyeing process which acts upon the pre ared war to form the d e thereon. If desired the filing may be lefi white or it may also be dyed by again dyeing the fabric with a dye of a difierent nature and color, which acts on the filling to dye it a contrasting color to the warp. Whether the filling be left white or redyed always be of a contrasting color to the dyed warp. v

A two step dyeing process may be selected wherein thefirst step thereof normally comprises treating the warp not with a water soluble chemical having non-d eing pro restufi in a true or modifie form or an 1ntermediate dye component, which would have no appreciable effect on the size, nor the size on its functioning. So far as I am aware no one has hitherto conceived of manufacturing an all cellulose textile fabric havi component sets of warp and filling ihrea fore weaving one of said component sets of threads with a dye ingredient of a twostep dyeing process at any stage in the preparation of said set,'then weaving said component set with the bther component set to form the cloth and then forming prepared component set 'by treating the fabric with a second step of the two step dyeing process, which acts upon the prepared component set to form the d e thereon. The. other component set may be either-left white in a contrasting color color by again separately dyeing the fabric with a dye of a different nature audcolor later to be of contrasting colors by treating be-- the dyestufi' .and the filling threads in to the V dyed component set or dyed in a contrasting,

contrasting color to the prepared component set. If desired each component set may he treated with a difierent dye ingredient of a two step dyeing process and the entire fabric subjected to a second common step of the two step dyeing process, which will simultaneously impregnate each component set with a difierent dye stud. It is thus obvious that the other component set normally the one not sized may he either first dyed or repared for simultaneously forming the yestud" thereon with the other com onent set .treatin the proper threads with its added cost. t present in the composite process five ste s arenecessary.

1 0 size the warp. 2 To treat the warp threads with a dye ingredient of a two step dyeing process.

(3) To treat the warp threads with the second step of a two step dyeing process.

(4) To treat the filling threads with a dye ingredient of a two step d eing process.

(5) To treat the filling t reads with the second step of a two step dyeing process.

Employing my invention however, where especially t pes of naphthols, or indigosols escribed are employed it is obvious that these five steps may be cut down to three, namely step one of sizing the warp threads and etc two of treating the warp threads with :1 ye ingredient of a two step dyein process may be done simultaneously. Step our of treating the fillin threads with a dye ingredient of a two step yeing process will have to be done separately as usual. The sized and prepared warp threads and the prepared filling threads may be then woven and step three namely, treating'the warp threads with the second step of their res ective two step dyeing process and in ad ition step five of treating the filling threadswith their separate step of their res ctive two step dyeing process may be one simultaneously by treating the warp the fabric with the same step. 7 I

This 'class'of a two step dyeing process, namely where thefirst step in the two step dyeing process comprises treatin wthe material to be dyed wlth a dye, or ye ingredient divides itself into two general classes namely' (B) Where the second step comprises the ap in Class B, or

' the cloth in the usual manner second intermediate dye componentsuch a developed dye treating thefabric with an additional dye or adye component an (0) Where the second step'in the dyeing comprises treating the material desired to be dyed with a chemical having an oxidizing or a reducing action to form the dyestufi on the fabric.

I will now bodiments of these difierent classes. ThlS entire generic class is claimed in this application, a continuation in part of application #9 1,089, filed specifically claims dyestuifs of the generic sub-class B heretofore referred to. Dyeing with a type of dyestufi hereinafter referred to in sub-class G is specifically claimed in application Serial #123,803; Filing date J u y 20,1926, filed of even dateherewith.

Although as stated, the preparation of either 'or both of these sets of component threads'by treating them with a dye ingredi;

ent of a two step dyeing process may be done at any point in the preparation prior to P weaving, 4 1- preferably so treat the warp threads while slashing and I will specifically describe this treatment in this description 0 stated owever, it is immaterial'whether the filling be first dyed, separately. prepared by treating it with a dye ingre ient of a two step dyeing process or left unprepared.

will now describe specifically the application of the dyeing process of the type of dyestuffs normally included in; classes B an namely, where the warp is simultaneously slashed and treated with a dye ingredient of a two step dyeing process, whether that dye ingredient comprises a dyestufi or an intermediate dye com mm, and whether after weaving, the entire fabric is aftertreated an intermediate dye comwith a dye or with ponentwhich couples with said first dye or intermediatedye component stufi' impregnated on the prepared warp as whether the dyestufl' be impregnated on the warp by treating the fabric with a water soluble chemical "having an oxidizing or a' reducing action as in Class C. Perhaps the most important. class of dyestufis in this general class B .are the developed colors. Applying my process todeveloped" colors I simultaneously treat the warp in with an intermediate dye component suc as naphthol, each of whic rhas: no a preciab e efiect on the functioning of the ot er, weave with a filling and later on aftertreatnthe as base to .cduplesdid components-to form ad estufi impregnated the prepared warp. y invention \therefore makes 1t possible to dye the warp or' mg, also if desired in faster shades thanhitherto v prepared as follows:

March 11, 1926, which f gradients may lication of the following dyes. As.

O done ina jig.

half hour in the mixing to form a dye- P the slashing process with a size and l p ponents or chemicals may be pending upon the color or shading desired This dye-bath is then run s washed, preferably in the fig, or if desired, dried singed and mercen zed, after the last wash,the

fabric with a thought possible in cellulose dyeingof intheusual manner.

description. The slasher solution may be (pounds of sage or other suitable size are a ded to allons of water. To this bath is added if desired 2 gallons of alizarine soluble oil. To this bath is also added-as an intermediate dye component 6 pounds of naphthol A. S. and describe in detail various eII l-' 5 pounds of sodium thiosul'phate crystals are added.

After the contents of the size tank have been mixed well, they are then run into the slasher box and the warp sized as usua is thus obvious that the goods may be pre- I pared for dyeing the warp with a developed color merely by adding a small proportion of an intermediate dye component to the sizing mixture. .In place of sago, otato, corn or any suitable kifid of starch, our or any suitable sizing material loyed, and in place and sodium thiosul hate, any other suitable dye component wit its other necessary inbe employed. The goods are then woven as hitherto explained andare then sent from the weave shop to the dye house.

After weaving, the fabric is suitably de- 1 veloped with adiazo base which acts uponthe prepared warp. Although this may be done in .anysuitable manner,

For this purpose '7 pounds of: red base may be dissolved in 8 ga lons boiling water, to which 2 gallons of hydrochloric acid may be added. After standing oneis inserted therein. After the mixture is cooled to about 40 F. 4 unds of sodium nitrate or other, suitable c After standing one-half hour,4 pounds of owdered alum are referably added. Just prior to-use, 7 oun s of pow preferably ad ed, when the entire solution 'may be emof naphthol, caustic soda it is preferably v tub, a block of ice emical is added."

ered chalk are may be poured into the jig. The fabric is y then passed through the jig for several minutes, .sufiicient to thoroughly diazotize and develop strength and of course, do shade desire of the red base and other chemicals materials an nd to some extent upon the It-is obvious that m place employs to be produced. of, the

If not merceri goods may bare-dyed in the same, 1g;.preferably with a 3 or 4% solution o f ='j' :a' substantive or direct color of .a difierentshade. After this, they-may be washed, dried and h scribed, other suitable intermediate dye dcogln- Iffit is desired the color on the. warp. The

d time of dyeing,

Cfl

termediate dve' com oncnt which to have the filling threads white in contrast to the dyed warp threads the last step of dyeing the fabric with a direct color may bedis ensed with.

ny suitable type of naphthol may be employed. There have recently market various different types of new naphthols, which are derivatives of naphthol such as the S. group, which is probably the best known which are aryl amides of betaoxy-naphthoic-acid. Any of these naphthols may be coupled with a second intermediate dye component to form a dyestufi impregnated on the prepared warp. In fact difierent naphthols of this group may be coupled with the same base or second intermediate dye component to form different colored dyestufis. Thus, if desired very pretty fast color efi'ects may be produced. such as by treating the warp in the slashing process with a naphthol A. S. S. W. and then treating the filling prior to Weaving with a naphthol A. S. G then weaving the cloth inthe usual manner and later after treating the fabric with a fast black L. B. base a black dye will be developed on the prepared warp and a brownish red dve will be developed on the prepared filling, both dyes of the normal fastness of a developed dye. It is thus obvious that in employing my invention in this manner faster shades may be developed on the filling, than is possible by merely dyeing the filling by after dyeing the entire fabric with a direct or substantive color. It is obvious that in place of naphthol any suitable intermediate dye componentcmay be employed and in place of a red base or a fast black L. B. base any suitable type of a second intermediate dye component may be employed. If desired the stabilized diazo compounds which have recently come upon the market may be employed as the second intermediate dye component which dissolve in water directly to' form the coupling solution without the ne-' cessity of any other chemicals or treatment. In place of naphthols or their derivatives any other suitable type of intermediate. dye components such as N. W. acid etc. may be employed to be coupled with a 'diazo component as the second step. If desired an intermediate dye component of the type of.

primuline may be employed as the first inwhen diazotized and treats with a naphthol as a second dye componentwill develop a fast red color on the treated component set, in a sense a reversal to the method specifically described.

I will now specifically describe the application of class C of the two step dyeing processes where the first ingredient of the two step dyeing process comprises treating the. fabric with a dyestufi modified or unmodified and the second step thereof comcome on the masses -vat dyestufi be insoluble it may be adhered to the prepared warp with the size and when the fabric is suitably aftertreated after weaving the insoluble vat dyestuft will change into a leuco compound to dyethe warp on Withdrawal from the bath.

izing or a reducing ac- Perhaps the most important class of modified dyes which may be dyed in this manner are the stabilized water soluble leuco compounds of vat dyestufis which have recently come on the market. Any suitable type of this'general type of dyestufl may be employed. What I preferably employ are the types of dyestuffs described in U. S. Patents Nos. 1,448,251 and 1,575,958which are the Water soluble ester-like derivatives-of the leuco compounds'of any suitable type-of vat dyestuffs whether they be produced from indigo as are the types now being put on the market by Societ Durand & Huguenin S. A. or those derived from indanthrenes, which according to an article in The Journal of Dyers and Colorists for Feb. 1925 are now being put on the market by the Scottish Dyes Ltd. This class of ester-like derivatives whether they be produced from indigo or from indanthrenes or from any otherv vat dyestuffs are aftertreated to develop the dyestuti onthefabric by reforming the dye by the action of a suitable oxi dizing agent. For the purposes of my invention however, any suitable type of a stabilized water soluble derivative of a vat- The slasher tank solution may be prepared as follows: I

25 pounds of sago or other suitable size are added to 50 gallons of water. To this bath is added if desired 2 gallons of alizarine soluble oil. To the bath is also added as the dye ingredient of the two step dyeing process 1-3 pounds of indigosol blue 0 4 B the amount depending upon the shade desired,- preferably previously dissolved in about 3 gallons of water. These materials may then be boiled together for about 20 minutes. in the size tank after which an amount of sodium nitrite equal in weight-t0 I with the size, I preferably fill-the jig with a 2 Tw. sulphuric acid, when d sing with an the indigosol used is added. After the contents have been mixed well they are then run into the slasher box and the warp sized as usual. It is thus obvious that the goods may be re ared for dyeinguthe warp with a vat co or y adding a sma proportion of a vat dyestufi', modified, or' unmodified to the sizing mixture. In place of sa p0- tato, corn, or any. other suitable stare flour or any other suitable sizing materials ma be employed and in place of indigosol O 4 any type of vat dyestufi modified or unmodified referably a stabilized water solup ble ester-' e derivative of the lance comgound may beemployed. In lace of soium nitr te any'other suitab e oxidizing agent may be employed, or if desired this may be d1s ensed with. The goods are then woven as itherto explained and then sent fromthe weave shop to the dye house.

After weaving the d estufi is developed on the warp by suitably thereon by any suitable aftertreatment epending on the nature of the vat dyestufi employed. -Where an indigosol or any water soluble ester-like derivative of a vat dyestufl has been employed as the first dye ingredient, 1' preferab y reform the dyestufl on the warpby an action of a suitable oxidizing agent; Although this may be done in any suitable manner, it is preferably done by passing the'woven fabric through a 'ig.

To reform the dyestufi by oxidation an to free the oxy n from the sodium nitrite preferably ad ed to the first dye ingredient indigosol .or like ester like erivative the color will immediately. be' developed on the warp. If. other types ofvat dyestufl's or their stabilized'water soluble derivatives be employed they may be suitably reduced to the desired leuco compound in any well-r. known manner, after which the dyestuif' will be reformed .on' the" fabric by oxidation on exposure to the air. Any suitable type of acid may be employed and any other suitable type of an oxidizing agent other than nitrite of soda may be employed. The goods are then washed soaked a d" ashed refer- P z n w p omitting the addition of the size-to the first tion of a substantive or direct color of a diiferent shade. After 'this they may be washed, dried and finished in the usual mantrasti ner. If it is desired to have the filling threads un-dyed and left a white in acouof dyeing the fabric with a direct color may be dispensed with. If it is desired to'dye the filling threads a faster color than they may be dyed with a direct color in a contralsgag shade, it is obvious that the filling th s forming the d e may be re-dyed in the same'i gacolor to the dyed warp the last step may alsoprior to weaving be similarly treat- 7 ed with a different type of indigosol such as indi l helio. The fabric is woven in the usua manner and later on pafiing the fabric through acid a blue dyestufi will be developed on the warp and a helio dyestuflz' will be dyed on the filling, thus. as explained eliminatin two of the fiv'e1:;=,steps hitherto necessary n dyeing-of this description.

It is obvious that by simultaneously treating the warp in the slasher box with a size and with a first step of a two step dyeing recess, each of which has no appreciable effect on the functioning of the other, weavinp the cloth .in the usual manner with the fil ing and treating the fabric with the secondstep of a two step dyeing process, which acts on the prepared warp to form the dye thereon, that it reduces the cost of manufacturin an all cellulose textile fabric in contrasting colors by the cost of one entire step.

in the process, as'hitherto explained namely by the separate ste of treating the warp separately with the rst step of the two step dyein process. It is apparent that I have provi ed a process which may be readily put inthe cotton mills without extra equipment and that I have shown for the first time a method of dyeing cellulose fabrics in contrasting colorsfaster than any hitherto used for this purpose.

As explained, my invention broadly includes the step in the process of manufacturing an all cellulose textile fabric having component sets of warp and filling threads of contrasting colors, which comprises, treating before weaving one of said component sets of threads with a dye ingredient of a two step dyeing process in any stage in the process of manufacture thereof or bothsets with a different dye ingredient of a two step dyeing process. Where this is .done

ste I it is obvious that a place of treating the entire warpor filling with the firststep of a two step dyeing process only parts of them, ma be so treated and therefore employ-t e phrases in the claims component sets of warp and fillinglthreads to in clude the entire warp or fi ing threads or any desired part thereof. I employ the words cellulose textile fabric to'include an all cotton fabric, or a fabric made from the t pe of rayons ..which contain substantially t e same pementage of cellulose as cotton or a greater'percentage of cellulose and which have substantially the same afiinity for the same type of dyestufis as cotton namely, viscose rayon, cupra-ammonium rayon and chardonet rayon, etc. entirely or mixed with cotton.

In the claims I employ the phrases dye component or intermediate dye compo-- nent to include any intermediate when not in the form'of the dye stuff formed on the fibre as the final result of my process, but which has to he coupled with another dye component to form the dye stuff formed on the fibre as the final result of my process the ty e claimed herein, so that it may later take a developed dye by any of the wellknown developed dye dyeing processes.

I employ the word weave in the claims in itsbroad sense as defined in Websters Dictionar of 1866 which defines it as followspl. To unite, as threads of any kind,

. in such a manner as to form a texture; to

entwine or interlace into a fabric as. to weave wool, silk and the llke; hence, to unite by close connection or mixture, to

unite intimately. .2. To form, as cloth,

by interlacing threads; to compose, as a texture of any kind, by putting together te'xtile materials; hence, to form into a fabric; to compose.

It is understood that my invention is not limited to the specific processes described and the various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

I color an to impregnate it with a dye stufi a diifer- What I claim as new and desire to secure by Letters Patent is: 1

1. The herein described im roved process of manufacturing an all ce lulose textlie fabric havin component sets of warp and filling threa s of contrasting colors which comprises treating before weaving one of said component sets with a dye in dient of a two step dyeing process, treating the other component set with a difierent dye ingredient of a similar two step dyeingproces's, then weaving said component sets to form the fabric and treating the fabric with a second common ingredient of the twostep dyeing process whichfacts on one component 'set'to imfpregnate it with a dye stuflof one sets onthe other compo ent contrasting color. o 1 4 v ache set V contrasting color.

reac es step dyeing process which acts on the warp to impregnate it with a dye stuff of one color and which acts on the filling to .im

pregnate it with a dye stuff of a contrasting color.

3. The herein described improved process of manufacturing an all cellulose. textile fabric havin component sets of warp and filling threa of contrasting colors which comprises treating before weaving one of said component sets of threads with an intermediate dye component, then weaving 99 said component set with t 'e other component set to form the fabric, resting the fabric with a second. intermediate dye component to couple said components to form a dye stuff impregnated on the prepared set,

and again dyeing the fabric with*'a dye of a different nature and color, which acts on the unprepared component set to dye it in a contrasting color to the'a prepared component set.

' 4. The'herein described improved process of manufacturing an all cellulose textile fabric ha filling threa s of contrasting colors which comprises treating before weaving one of said component sets of threads with'an intermediate dye component, then weaving said component set with the other component set to form the fabric and, treating the fabric with a second intermediate dye component to couple said components to. form a dye stuff impregnated on the prepared set.-

5. The herein described 1m roved process of manufacturing an all ce ulose textile fabric havin component sets of warp and filling threa s of contrasting colors which comprises treating before weaving one 'of said component sets with an intermediate dye component, treating the other component set with a different intermediate dye 7 component, then weaving said component set with the other component set to form the fabric and treat-in the fabric with a common intermediate ye component to couple it with the dye-com nent on one component set to im regnate it with a dye stud of one color an ponent on the ot or component set to impregnate it with a dye stufi of a difierent component sets of warp and to couple it with the dye com- 'simu1taneously treating the warp in the termediate dye com of the ot slashin slashing process with a size and with an intermediate dye component, each of which ect on the functioning er, weaving the fabric in the usual manner with a filling, treatingthe fabric with a second intermediate dye component to couple said components to form a' dye stuff impregn ted on the prepared set, and again dyeing the fabric with a dye of a different nature and color, which acts on the unprepared component set to dye it in a contrastin color to the prepared component set.

7. T e herein described improved process of manufacturing an all cellulose textile fabric in contrasting colors, which comprises simultaneously treating the warp in the process .with a size and with an intermediate dye com onent, each of which has no appreciable e ect on the functioning of the other, weaving the fabric in the usual has no appreciable e manner with a filling and treating the fabric with a second intermediate dye component to couple said components to form a dye stuff impregnated on the prepared warp.

8. The herein described 1m roved'process of manufacturin an all ce lulose textile fabric in contrasting colors, which comprises simultaneously treating the warp in the slashing process with a size and with an innent, ea'ch'of which ecton the functioning the fillingwith a difdye component, then has no appreciable e of the other, treating ferent intermediate weavingsaid warp and filling in the usual manner to form fabric and treating the fabric with a common intermediate dye com-- ponent to couple it with the dye component on one component set to impregnate it with a dye stuff of one color and to couple it with the dye component on the other com onent set to impregnate it with a dye stu of a different contrasting color.

9. The herein described improved process of manufacturing an all cellulose textile fabric havin component sets of warp and filling threa s of contrasting colors which comprises treating before weaving one of said component sets with a developed dye preparatory ingredient, treating the other component set with a different developed dye preparatory ingredient, then weaving said component sets to form the'fabric and treating the fabric with a developed dye base, which acts on one component set to impregnate it with a dye stuff of one color and acts on the other component set to imregnate it with a dye stuff of a different contrastin color.- 1 i 10. The erein described im roved process of manufacturin an all cellulose textile fabric in contrasting colors, which comprises,

' comprises. treating simultaneously treating. the warp in the SlflSlllIlf'flOCBSS with a size and with a develope ye preparatory in' which has no appreciab e e ect on the functioning of the other, treating the filling with filling threads of contrasting colors which comprises treating before weaving one of said component sets with a solution of a naphthol, weaving said component set with the other component set to form the fabric, treating the fabric with a diazotized base, which acts on the prepared component set to impregnate it with a dye stuff and again dyeing the fabric with a direct dye of a different shade, which acts on the unprepared component set-to dye it a contrasting color to the prepared com onent set.

12. The herein describe improved process of manufacturing an all cellulose textile fabrichaving component sets of warp and filling threads of contrasting colors, which before weaving one of said component sets of threads with a solution of a naphthol, then weaving said component set Wltithe other component set to form the fabric, and treating the fabric with a diazotized 'base, which acts on the prepared ,component set to impregnate it wit a dye stufl'.

13. The'herein described improved process of manufacturing an all cellulose textile fabric having component sets of warp and filling threads of contrasting colors which comprises treating before weaving one of said component sets with a solution naphthol, treatin the other component set with a solution 0 a different naphthol, then weaving .said component sets to form the fabric and treating the fabric with a diazotized base, which acts on one component set to impregnate it with a dye stuff of one color and acts .on the other com onent set to impregnate it with a dye stu ofv a different contrasting color.

14. The herein described improved procwith a diazotized base, which acts on the edient, each of I .70 a different developed dye preparatory in ofa warp to impregnate it with a d e stufiandagain dyeing the fabric with a ye of a different nature and color which acts upon the unprepared filling to dye it a contrasting color to the warp.

15. lhe herein described improved process of manufacturing an all cellulose textile fabric in contrasting colors, which comprise simultaneously treating the warp in the slashing process with a size and with a solution of naphthol, each of which has no appreciable efiect on the functioning of the other, weaving the fabric in the usual manner with a filling and treating the fabric with a diazotized base, which acts on the warp to impregnate it with a dye stuff.

16. The herein described improved process of manufacturing'on all cellulose textile fabric in contrasting colors, which comprises simultaneously treating the warp with a size and with a solution of a naphe thol, each of which has no appreciable effect on the functioning of the other, treating the filling with a solution of a difierent naphthol, then Weaving said warp and filling in the usual manner to form the fabric and treating the fabric with a diazotized base, which acts on the warp to impregnate it with a dye stuff of one color and which acts on the filling to impregnate it with a dye stuff of a contrasting color.

17. The herein described improved step in the process of manufacturing an allcellulose textile fabric in contrasting colors, which comprises simultaneously treating the warp in the slashing process with a' size and with a solu'tion'of a naphthol, each of which has no appreciable effect upon the functioning of the other.

18. An all cellulose textile fabric in the.

sets of threads, one of said component sets of threads being impregnated with an intermediate dye component and another of said component sets being impregnated with a different intermediate dye component.

20. An all cellulose textile fabric in the gray state made up of component sets of threads interwoven with other component sets of threads, oneof said component sets of threads being impregnated with an in- 'termediate dye component.

21. An all cellulose textile fabric in the gray state made up of component sets of threads interwoven with other component sets of threads, one of said component sets of threads being impregnated with a naphthol and another of said component sets being impregnated with a different naphthol.

threads interwoven with other component sets of threads, one of'said com onent sets of threads being impregnated with a naphthol.

In testimony whereof I aflix my signature.

JOHN C-.WATSON.

22. An all cellulose textile fabric in the gray state made up of componentsets of' 

